Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '99a489bea623c0c9d8a1c965e801099a01b27742283858075661e46d6a415bcc' 
  AND token = 'xNHhBPmN5uVpkzQhhlcRCcVdzM70pj35kyarmqG3Xu0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}